Unlock Tank Abbott:
To unlock Tank Abbott, beat the game with Dan Severn.

Unlock Bruce Buffer:
Win the Silver and Gold belts with every Middleweight fighter to unlock Bruce Buffer.

Unlock Card Girl:
To unlock the Card Girl as a playable character, win a Silver Belt with each of the default fighters.

Unlock Dana White:
Win the Silver and Gold belts with every Lightweight fighter to unlock Dana White.

Unlock John McCarthy:
Win the Silver and Gold belts with every Heavyweight fighter to unlock John McCarthy.

Unlock Karate Style:
To unlock the Karate Style, complete a Career with a Sumo fighter.

Unlock Kung-Fu Style:
To unlock the Kung-Fu Style, complete a Career with a kickboxer.

Unlock Lorenzo Fertitta:
Win the Silver and Gold belts with every Welterweight fighter to unlock Lorenzo Fertitta.

Unlock Mario Yamasaki:
Win the Silver and Gold belts with every Light Heavyweight fighter to unlock Mario Yamasaki.

Unlock Nin-Jitsu Style:
To unlock the Nin-Jitsu Style, complete a Career with a Karate fighter.